FUEL 204 |
| A discharge of wet biomass, especially, food wastes exhausted from food industries, are one of the serious environmental problems all over the world. Because of high moisture content, it is difficult to preserve wet biomass and it costs expensive for transportation. Moreover, through the thermo-chemical conversion of biomass, a large quantity of tar formation is an obstacle to the stable and efficient operation. In this study, to overcome these drawbacks, wet coffee grounds were mingled with calcium hydroxide and dewatered at 150 °C in the bio-oil which was recovered beforehand at the devolatilization temperature (325 °C), and we examined the change in the product distribution during pyrolysis of the treated coffee grounds. By this pretreatment, the moisture was completely removed and formation of tar during pyrolysis was suppressed. The tar yield during the flash pyrolysis at 764 °C decreased effectively from 0.31 to 0.22. |
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Advances in Solid and Liquid Fuel Chemistry
1:30 PM-5:00 PM, Wednesday, 13 September 2006 Palace -- Mendocino Room, Oral
Division of Fuel Chemistry |